【www.bbyears.com--MongoDB】
mongodb模糊查询并分页
1.建立数据库
代码如下：
代码如下
varmongoose = require('mongoose');
varshortid = require('shortid');
varSchema = mongoose.Schema;
varIndexDataSchema =newSchema({
_id: {
type: String,
unique:true,
'default': shortid.generate
},
type: String,
city: String,
name:string,
value: [{name: String, value: String}],
create: {type: Date,default: Date.now},
expand: String
});
IndexDataSchema.statics = {
defaultSort: {'create': 1},
defaultOptions: {'pageSize': 0}
};
varIndexData = mongoose.model('IndexData', IndexDataSchema);
module.exports = IndexData;
页面布局 这里只需要搜索框和搜索按钮，再点击按钮时，执行search()方法并发送请求
代码如下：
代码如下
<script>
varpaginObj;
//设置每页显示页码
varpageSize = 20;
//设置当前页码为1
varcurrentPage = 1;
varcondition = {'city': currentCityId,'name':''}
jQuery(document).ready(function() {
refresh();
});
//获取查找条件
functiongetCondition() {
varname = $('#txtSearch').val();
if(name && name.trim()) {
// {'$regex': name, '$options': 'i'}}为模糊查询固定语法，name为参数
condition = {'city': currentCityId,'name': {'$regex': name,'$options':'i'}};
}
else{
condition = {'city': currentCityId}
}
returncondition;
}
//刷新页面
functionrefresh() {
//查找内容
$.get('/Manage/list/projects', {
'pageSize': pageSize,
'currentPage': currentPage,
'condition': getCondition()
},function(result) {
appendData(result.data);
})
//查找个数
$.get('/Manage/listCount/projects', {'condition': condition},function(result) {
paginObj =newDataPagin(document.querySelector('.projects-list'), result.count, {
'pageSize': pageSize,
'changePageFun': rquestPageData
});
})
}
//重新分页
functionrquestPageData(currentPage, callback) {
$.get('/Manage/list/projects', {
'pageSize': pageSize,
'currentPage': currentPage,
'condition': getCondition()
},function(result) {
appendData(result.data);
})
if(callback) {
callback();
}
}
//改变页码，显示相应的内容
functionchangePage(paginObj, index) {
paginObj.setPageNumber(index);
}
functionappendData(data) {
//debugger;
varlist = $('.projects-list').children('tbody');
list.html('');
// 页面显示模板
for(vari = 0; i < data.length; i++) {
.........
//此部分自己定义
})
}
//点击搜索按钮执行该方法
functionsearch() {
currentPage = 1;
refresh();
}
</script>
2.到数据库查找并返回相应内容
代码如下
varformidable = require("formidable");
varcommon = require('./common');
varpath = require("path");
varfs = require('fs');
varpath = require('path');
varguid = require('guid');
varshortid = require('shortid');
varAuctionHouse = require('./db/IndexData');
varfuns = {
getList:function(collectionName, req, res, next) {
varmainObj = transformCollctionName(collectionName);
if(!mainObj) {
next();
}
varoptions = req.query;
varsort = options.sort || mainObj.defaultSort;
varpageSize = options.pageSize || mainObj.defaultOptions.pageSize;
varcurrentPage = options.currentPage || 1;
varcondition = options.condition || {}
//此部分为查找条件
mainObj.find(condition).sort(sort).skip((currentPage - 1) * pageSize).limit(pageSize).exec(function(err, docs) {
if(err) {
next(err);
}
returnres.json(common.returnData(true, docs));
})
},
countList:function(collectionName, req, res, next) {
varmainObj = transformCollctionName(collectionName);
if(!mainObj) {
next();
}
varcondition = req.query.condition || {}
mainObj.find(condition).count().exec(function(err, docs) {
if(err) {
next(err);
}
returnres.json({'count': docs});
})
},
HandleEvent:function(collectionName, actionsName, req, res, next) {
varmainFuns = getCollctionFuns(collectionName)
if(!mainFuns) {
next();
}
varfun = mainFuns[actionsName];
if(!fun) {
next();
}
fun(req, res, next);
}